Custom Instrumentation Via Instrument Decorator With Span Type Taxonomy

via “custom instrumentation via @instrument decorator with span type taxonomy”

LLM app instrumentation and evaluation with feedback functions.

Unique: Provides LLM-specific span type taxonomy (RECORD_ROOT, GENERATION, RETRIEVAL, EVAL) via @instrument decorator, enabling semantic span classification without manual tagging. Decorator integrates with TracerProvider context to support nested instrumentation and automatic span hierarchy construction

vs others: More ergonomic than manual OTEL span creation; decorator syntax reduces boilerplate while LLM-specific span types provide semantic meaning that generic OTEL instrumentation cannot infer

via “decorator-based custom span creation and association”

OpenTelemetry-based LLM observability with automatic instrumentation.

Unique: Provides lightweight decorator-based instrumentation that automatically propagates OpenTelemetry context through function call stacks, enabling seamless integration of custom code tracing with automatic library instrumentation

vs others: Simpler and less intrusive than manual span creation with try-finally blocks, with automatic context propagation that prevents context loss in complex call chains

via “custom instrumentation with @instrument decorator for arbitrary python methods”

Backwards-compatibility package for API of trulens_eval<1.0.0 using API of trulens-*>=1.0.0.

Unique: Provides @instrument decorator that generates OTEL spans for arbitrary Python methods with configurable span kinds and attributes, enabling fine-grained custom instrumentation beyond framework wrappers.

vs others: More flexible than framework-specific wrappers; simpler than manual OTEL span creation; enables developers to instrument custom logic without boilerplate.